Most of the designs are classic and come at affordable prices, making them an excellent choice for simple looks and long-lasting illumination. In conclusion, luminous watches are designed to provide you with a fascinating adventure. Luminous dial watches can last up to a few hours of glow. This makes it last longer than a fluorescent light. They absorb light and slowly re-emit it later. Instead, phosphorescent materials are used. Fluorescent materials are not normally used in the creation of luminous watch dials. When the source of light is removed, they lose their glow. In the case of fluorescence, they will only glow as long as there is a source of light. Photoluminescence comes in two types, namely: fluorescence and phosphorescence. This means they can only emit light after they are exposed to light. Luminous watches gain their ability to glow in the dark because of a special element called phosphorescence, which is a special case of photoluminescence. The nature of luminous materials is that they later dim to the point they are no longer useful. These type are extremely radioactive but they are not too harmful to a user unless you inhale or ingest the radium directly. They may not appear to be as radioactive because the phosphor in paint is eaten with radium. They cannot penetrate beyond the outermost skin layer. They emit beta particles which are not very energetic. In here, phosphorescent paint are mixed with small tubes that are filled with tritium which is radioactive in nature. If this is the case, the watch is completely harmless.īut there are different types of watches. They are coated in paint and they absorb light and later re-emit it to produce their glow. Most of the watches in the market today are phosphorescent watches. This totally depends on the type of luminous watch dial you are using. Given that luminous watches obtain their glow from radioactive elements, you may be wondering whether they are dangerous to you as a user. With the knowledge and history behind l uminous watch production, we explore whether owning a luminous watch is dangerous for your health. With only 10 minutes of exposure to light, LumiBrite can shine up to 5 hours in the dark. LumiBrite: This technology uses a strontium aluminate base together with europium and dysprosium that makes it more effective at emitting light. Presently, Super-Luminova is available in over 3000 different colors in varying brightness. Super-LumiNova: This was invented in 1993 and it uses strontium aluminate to absorb and emit light. Chromalight comes in distinctive blue color. Chromalight is portrayed to have superior brightness and longevity compared to other technologies. Technologies Used to Make Luminous WatchesĬhromalight: This technology was introduced in 2008 by Rolex with its Deepsea watch. Photoluminescent technologies like Super-LumiNova, LumiBrite, and Chromalight are presently used to make luminous watches. They do not shine very long especially in absence of light. They absorb light during the day, store it, and gradually re-emit it at night as a bright glow. Our present paints are using non-radioactive photoluminescent materials which contain strontium aluminate that acts as light banks. It only takes a few years up to a decade before the glow is gone. However, radium paint gradually loses its shine with time as a result of phosphor deterioration. This is what gave the watches their glow initially. It produces its light through radioactive decay. Radioactivity was first discovered in the 20th century and with it, came the production of radioluminescent elements: radium paint. All in all, you may be wondering what makes a luminous watch glow? While there may be few luminous watch designs in the market today, watch manufacturers are constantly innovating on the luminous dial to find a perfect illuminator. They are also commonly used in military applications. They provide a convenient way of telling time in the dark.
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